I've drilled mine out to 1/16 (which is equal to 1.587mm) and think I could go a little more. I do like to direct lung inhale though, and that method really requires more air flow than the mouth inhale.
I think 1/16 is a good compromise to keep the flow good for mouth inhales and lung inhales both.
If are in a discovery mode with a RSST, it is best to step up on the hole size. Obviously, there is no going back down in size, once a hole is drilled.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.